GH Actions: also lint against _next_ PHP version #347

	---
	name: Security check

	on:
	- push
	- pull_request
	# Allow manually triggering the workflow.
	- workflow_dispatch

	# Cancels all previous workflow runs for the same branch that have not yet completed.
	concurrency:
	# The concurrency group contains the workflow name and the branch name.
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	security-check:
	runs-on: ubuntu-latest
	name: "Security check"

	strategy:
	matrix:
	php: ['5.4', 'latest']

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Install PHP
	uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php }}
	coverage: none

	- name: Enable creation of `composer.lock` file
	run: composer config --unset lock

	# Install dependencies and handle caching in one go.
	# @link https://github.com/marketplace/actions/install-php-dependencies-with-composer
	- name: Install Composer dependencies
	uses: "ramsey/composer-install@v3"
	with:
	# Bust the cache at least once a month - output format: YYYY-MM.
	custom-cache-suffix: $(date -u "+%Y-%m")

	- name: Download security checker
	# yamllint disable-line rule:line-length
	run: wget -P . https://github.com/fabpot/local-php-security-checker/releases/download/v2.0.6/local-php-security-checker_2.0.6_linux_amd64

	- name: Make security checker executable
	run: chmod +x ./local-php-security-checker_2.0.6_linux_amd64

	- name: Check against insecure dependencies
	run: ./local-php-security-checker_2.0.6_linux_amd64 --path=composer.lock

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